Loom attachment



J. A. WEITHAASE.

LOOM ATTACHMENT.

APPLICATION FILED NOV-1B. 1919.

1 388,537 I Patented Aug. .23, 1921..

2 SHEETS-SHEET J. A. WEITHAASE.

LOOM ATTACHMENT.

APPLICATION FILED NOV. 18, 1919.

1,388,537. Patented A g. 23, 1921.

2 SHEETS-SHEET 2- Fig.4

MTW

JULIUS ALBERT WEITHAASE, OF PHILADELPHIA, PENNSYLVANIA.

LOOM ATTACHMENT.

Specification of Letters Patent.

Patented Aug. 23, 1921.

Application filed November 18, 1919. Serial No. 338,834.

To all to 7mm it may concern Be it known that I, JULIUS Anrnn'r \Vnrrnaasn, a citizen of the United States, residing at Philadelphia, in the county of Plnlzn delphia and State of Pennsylvania, have iii-- vented certain new and useful Loom Attachments, of which the following is a specification.

This invention .is a loom attachment for holding the filling threads after passing through the sheds so as to prevent slack in such threads, thus eliminating drags and kinks in the cloth, avoiding the necessity for mending the fabric, improving the clmracter of the weave permitting the closing of the sheds to be delayed and facilitating the use of soft warp yarns, and permitting a reduction of the amount of brush for tension required in shuttles.

The characteristic features of the invention are set out in the following description and the accompanying drawings in illustration thereof. 1

I11 the d awings, Figure 1 is a sectional view of a part of a loom having my improvements applied thereto; Fig. 2 is a broken plan view of the construction shown in Fig. 1; Fig. 8 is a part sectional view 111 ]llUS tration of details of the construction, and Fig. dis a plan view of details of the construction shown in Fig. 1.

As illustrated in the drawings, the loom frame 1 has the lay 2, which is pivoted on the bearing 3 and provided at its ends with the bearings 41 for holding the pins 5. liesilient levers '7 are fulcrnmed on the pins 5, these levers comprising the coils 7 mounted on the pins. the forwardly extending arms 7 adapted to engage the top of the lay and. the oppositely disposed angular )CT:tl1ll'lf;{ arms 7. These lovers are normally held with their arms 7* in engagement with the top of the lay 2 by the coiled springs 8 Which are mounted on the respective pins 5, each. spring having one of its ends secured to the pin on which it is mounted and the other end secured to the corresponding lever for the purpose of rocking it so as to throw the arm 7* toward and hold it against the lay. The tension of these springs 8 is readily adjusted by adjusting the pins under control of the set screws 6. Bearing studs 9, fixed to the frame 1, carry the respective collars 10 adjustable by the set screws 11 and the resilient levers 12 having the coils 12 on the studs the laterally extending arms 12 set in the collar and the upwardly extending arms 12 adapted for engaging therespective arms 7", the arms 12 having the offset parts 12 for engaging the lay. Angular arms 13 'are carried by the collars 14: which are held elevate the arms 7" beneath which the filling thread 19 then passes upon the throw of the shuttle. When the crank shaft 20 acts through the, links 21 to move the lay 2 for ward (after the shuttle 18 has passed through the shed) to cause the reed 22 carried by the lay to press the filling thread 19 forward in the now closing shed, the arms 7 are withdrawn from the arms 12 (which are engaged and stopped by the arms 13) and the springs 8 rock the levers 7 to engage their arms 7 with the lay 2. The filling thread 19 thereby engaged between the reed 22 and the shuttle 18 (preferably before the latter has completed its throw) by the corresponding arm 7", the thread being held under the tension given it by the shuttle in drawing it through the shed. A slight additional tension may be applied thereto by providing in the lay a transverse groove 2, adapted for receiving the arm 7', which may be provided with a pliable cover 7' of cloth or rubber for preventing injury to the thread. As the harness 17 acts to cross the warp threads 16 on the filling thread 19, the lay 2 starts its reverse movement and the picker staff .13 starts the shuttle 18, the corresponding arm 7 continues to engage the filling thread 19, which is thus held unrelaxed so as to prevent the slack in the thread between the shuttle and the reed from being carried into the shed as the latter closes. In the further reverse movement of the lay 2. the resilient arms 7 engage the arms 12 and the levers 7 are rocked to again elevate the arms 7 to permit the shuttle 18 to pass thereunder on its way through the now open shed the lay engaging the parts 12 to move the arms 12 back and secure the necessary dwell in elevation of the parts 7" Without undue pressure upon the arms 7 c which are now relatively free. between the parts 2 V g and 12.

ing said levers and retracting said arms.

2. A loom attachment comprising a lever adapted tobe reciprocated by a lay and oscillated relatively thereto across the line of the fiilling thread, said lever adapted to press said thread against said lay, and means independent of said lay in the path of said lever for engaging and rocking it so as to retract it from said line.

3. A loom attachment comprising a lever adapted to be reciprocated by a lay and oscillated relatively thereto across the line of the. filling thread, a spring for pressing said lever toward said line, and a resilient device in'the path of reciprocation of said lever for engaging and retracting it against the action of said spring.

4. In a loom, the combination with the frame and the lay, of bearing devices carried by said lay at the respective ends thereof, levers fulcrumed on the respective bearing devices, springs for effecting the engagement of arms of said levers with said lay across the line of the filling thread,

bearing means carried by said frame, resilient members held by said bearing means last named for engaging said levers to retract "them against the actions of said springs, and means for limiting the movements of said members.

5. In a loom, the combination with the frame and the lay, of bearings fixed to said lay at the respective ends thereof, ins carried by'said bearings, levers havlng coils on said pins, each lever havin an arm movable across the path of the fil mg thread over said lay and an oppositely extending arm having a laterally extending part, coiled springs on said ins for throwin arms aforesaid across t e path aforesai pins carried by said frame, resilient memers having colls mounted on said pins last named and adapted for enga ing sald laterally extending parts to me said levers against the actions of said springs, and means for limiting the movements of said members toward said lay.

6. In a loom, the combination with the frame and the lay, of bearing devices carried by said lay, levers comprising resilient coils fulcrumed by means of said hearing devices, said levers having arms dapted for engaging the filling threads to said lay, springs for automatically throwing said arms against said lay to engage the filling threads thereto, and means in the paths of movement of said levers for disengaging said arms from said lay.

7. In a loom, the combination with the frame and the lay, of bearing devices carried by said lay, levers fulcrumed by means of said devices, each of said levers having an arm adapted for engaging a filling thread to said lay and an oppositely disposed arm having a laterally disposed art, and an arm in the path of each of said laterally disposed parts for retracting said arms first named from said lay.

In testimony whereof I have hereunto set my hand this 17th day of November, 1919.

JULIUS ALBERT WEITHAAS'E. 

